1. By using Root Explorer (or other Explorers that have root access), go to "/system"
2. Backup the original build.prop
3. Copy and paste my MOD build.prop there and set permission like the original (rw-r--r-)
4. Restart your phone, activate DSEE HX and enjoy!(Find screenshots in the attachment.)

Note: All files are based on original ftf(s) that are generated by Flashtool (files from Sony PC Companion & XperiFirm).

IV. Q&A:

Q 1 : Root Checker says this ROM is rooted, but Titanium Backup can't get root access?A : Update your Titanium Backup to the latest version or try this one.

Q 2 : I've got bootloop with Xposed Framework? A : Don't be panic! Flash the C690X_Flashable_14.5.A.0.242_SG_*.zip again. It's a must to update Rcovery to v2.8.12 or later. It's working fine with the latest version of Xposed. [Screenshots]

For everyone asking for will it work on my device...
Just remember.. C6902 works for all countries with this model number .. Just wont work on other than C6902..
Its of common sense like C6902 will not work on model other than C6902..

XDA Developers was founded by developers, for developers. It is now a valuable resource for people who want to make the most of their mobile devices, from customizing the look and feel to adding new functionality.Are you a developer? | Terms of Service